'''
第一个学习例程
'''
import sys
# import s7
# # from s7.c2 import *
# from s7.c2 import b, a
# print('hello,world')
# True
# False
# None

# # from 7 import c2
# # import c2
# print(a)
# print(b)
# # print(c2.a)
print(sys.path)
print(__name__)
print(__file__)
print(__doc__)